The development team for WildStar discuss the ability mechanics which will be included in gameplay. The video explicates how WildStar deals with traditional Instant, Cast time and Channel abilities. According to the WildStar team, abilities will allow “players to interact with their abilities in a much more reactive way.”
The most noticeable difference between WildStar and other MMORPGs is that you can move while using your abilities, which may sound unimportant, but really it could contribute a lot to fun, and interactive gameplay. The combat in WildStar will be more involved than other combat systems, like World of Warcraft.